Third highest-grossing [Muppet] film, earning $31,206,251 during its run at the box office.

Gonzo's classification as a "whatever" is officially cemented in this film, as this is the label affixed to his shipping crate en route to Great Britain.

The end of the bicycle scene (where all the Muppets are shown riding together) was actually done by putting all of the Muppet characters onto their bikes, hooking them together, and pulling them. Brian Henson, on an oversized tricycle, was among those who pulled the bikes.

The girl in the park who thinks Kermit is a bear is Christine Nelson, daughter of Muppeteer Jerry Nelson (with whom she appears in the scene). Christine suffered from cystic fibrosis throughout her short life, and finally succumbed to the disease in 1982, one year after the film debuted.